Single-tank boiler washing and filling apparatus



May 14, 1929. s. oTls E1' AL l 1,713,298

SINGLE TANK BOILER WASHING AND FILLING APPARATUS v Filed oct. 19. 1922COME/Nip im ve y llwlim m Patented May 14, 1929.

UNITED STATES*g 'SPENCER OTIS, 0F BARRINGTVON,`AND FRANK S.

PATENT OFFICE.

wICI-IivIAN, oF IIIGIILAND PARK,

ILLINOIS, AssIGNoR's 'ro NATIONAL BOILER wAsiIiNefy COMPANY, or CHICAGO,

ILLINOIS, A CORPORATION OFJVIAINE.

SINGLE-TANK BOILER WASHING vANI) FILLING APPARATUS.

VApplication led `October 19, 1922. Seria1,N`o..595,540.

'This invention relates to an apparatusfor Y motive has its boilerwashed out and refilled, hereinafter referred to as a locomotive vstall, and from a single source, water at two different temperaturesappropriate, respectively, for washing out the boiler and for fillingit. v

It has long been the practice to provide means whereby water supplied ata temperature that is unsuitable fora particular use in the boiler, forinstance, water which is initially too hot for handling in thewashingout of the boiler, will be automatically tempered before-it reaches theoutlet throughl which itis supplied to the boiler. Another object of thepresent invention is to cause thisautomatic tempering to be responsiveto the act of opening the outlet'intended for the release of washoutwater to the boiler, thereby not only limiting the consumption oftempering water tothe duration ofthe washout operation but leaving thetempering elements inactive when water flows through the same pipe tothe boiler filling connection for the purpose of refilling the boiler,`for which purpose the temperature of the water may not be inappropriate.1 f

Another object ofthe invention is to provide a system in which twodifferent water delivering connections are supplied through a commonsource, and the Awater is tempered to an appropriate degree whenreleased through one of said connections, but is not so l'tempered whendelivered through the other connection. The invention proceeds upon theprinciple of providing one of the delivery connections, for instance,the washout connection, with a valve that not only serves to open andclose such connection but causes the opening and closing of a shutoif,preferablyy in the form of a valve in a water pipe that is adapted tosupply tempering water to the closing of one of the deliveryconnections, so that supply of tempering water, while selectivelycontrolled according to the use to which the How over the line is beingput, will be limited to not only the time during which it is needed, butto the quantity necessary to lbring the used water to the desiredtemperature. Accordingly, theinvention preferably proceeds upon thefurther principle of introducing into the supply main a thermostatconnected to control the tempering water pipe, through a graduatingvalve separatel and distinct from the shuto which is re- .temperingwater will be commensurate with the temperature of the mixture.

In the accom an infr drawing* A: vFigure l shows by perspective view aplant embodying the several `features of the invention; and

lFigure 2 is a sectional detail view of the valve of the washoutconnection-, v

1 represents a blowoff pipe adapted to be connected through a drop 1awith a-'locomotive which is to be cleaned out, and 2 repre- A sents aseparator into whichblown off products, comprising sludge, water, andvolatiles, such as steam and vapor, are blown, and fromwhich the sludgeand water after giving up their volatiles will escape through a drainpipe 3 having a goose-neck 4 of sufficientx height to prevent too suddenevacuation of the separator under ,blowoff pressure, and

having a direct outlet valve 5 whichmay vbe opened when necessary.Abovethe separator 2 is a condenser 6, preferably incorporated in thesame physical unit with the separator,

in accordance with known practice. Condenser 6 is equipped with spraypipe 7 con- 'r trolled by valveV 8 which is responsive to thermostat 9,and said condenser has a discharge pipe 10 delivering to a tank 11 hotwater resulting from the condensing operation. 12 represents a watersupply main through which water from the tank 11 is forced by pump 13,and 14L represents a steam pipe fordelivering live steam to the ypump ata ratel determined by valve 15, whichis of known construction,purchaseable in the open market 'at a date prior to the presentinvention, and which is responsive to load on the water main 12 which istransmitted to water through flexible hose 2l and washout" nozzle 22. Y1

As thus itardescribed, the operation olf the apparatus followsconventional and hnown principles, and the parts may be ot knownconstruction.

According to the present invention, the washout connection 2O isprovided rwith a valve 23 which, in addition to its usual 'tunetion oforijiening and closing the washout connection, is adapted to open andclose a pressure pipe 24 which controls a. valve 25 in a cold water pipe2G which communicates at 2T with the water pipe 12 which feeds the pump13, so that whenever the valve 23 is opened to supply water `for washingthe boiler, valve 25 will be opened to release cold water into lthe hotwater main to temper the saine, whereas the opening ot the illingconnection 18 while valve 23 is closed will draw from the same watermain, hot water untempered and therefore more appropriate l'or boilertilling purposes.V Y

In order that the water in the main 1 2 may not be changed'undesirablyin temperature, cold water pipe 26 is provided with another element otcontrol, consisting ot a valve 2S under control of a thermostat 23Lintroduced into the intake pipe 12a ot the pump 13 and responsive totemperature effects in said intake pipe. Thus, the delivery of temperingwater issubject to a dual control, one element ot which consists of avalve which is responsive to the vselection of the washout connectionfor delivery of water to the locomotive, and the other element of whichis responsivetothe temperature of the Water being delivered to the line.Y

"While any suitable torni of valve may be used for the connection 23, weprefer to use a construction such as shown in Figure 2, according towhich thevalve plug 1s provided with a port 23a for the water to bedelivered,

open, air will be-wasting from pipe 2l,

but in such small measure as to be imma 'terial from the standpoint oi?economy.

lWe claim:

1. ln a boiler washing system,a het water source, a locomotive stall, awashout water outlet and a lilling wateroutlet at said stall, a deliverypipe connecting said hot water source to bothsaid outlets, a washoutvalve controlling the washoutwater outlet, a filling valve controllingthe lilling water outlet, a tempering water pipe communicating*with thedelivery pipe at a point in advance of the connection of the deliverypipe with said outlets, a shutol'l' controlling the escape of water fromthe tempering water pipe to the delivery pipe, a means ot communicationbetween the washout valve and said shutotl' whereby the shutoff isopened and closed by the opening an d closing ot the washout valve, agraduat ing vvalve controlling the flow of tempering water released bysaid shutoii', and a thermostat controlling said graduating valve andsubjected to temperature of water in the delivery pipe after the waterhas beenv tempered.

2. A boiler vashing system as described in claim 1, in which the meansof communication between the washout valve and the shutoit' comprises apressure pipe controlled by the washout valve, and a pressure actuatedelement controlling saidV shutoff.

Signed atfChicago, illinois this 16th day of October, 1922.

SPENCER OTIS.

FRANK S. l/VCHMAN.,

